Description of problem:
Building "epiphany" against "xulrunner" fails because the built-in
extensions of the latter are not sufficient. "configure" aborts with
the message: "configure: error: xulrunner needs to be compiled with
at least --enable-extensions=default,cookie,permissions".

Version-Release number of selected component (if applicable):
xulrunner-1.8.0.cvs20060505-1

How reproducible:
Always.

Steps to Reproduce:
1. Rebuild "epiphany" adding "--with-gecko=xulrunner"
  
Actual results:
Configure stage aborts.

Expected results:
Configure stage completes successfully.

Additional info:
According to "xulrunner-mozconfig", "xulrunner" is built with
option "--enable-extensions=python/xpcom,default". "epiphany"
also requires extensions "cookies" and "permissions".